Home / 910,388.20-1,366,359.90-405,725.80

Finding the Fourth Proportional to 910,388.20, 1,366,359.90 and 405,725.80

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Solution

The fourth proportional to 910,388.20, 1,366,359.90 and 405,725.80 is: 608,935.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,388.20 : 1,366,359.90 = 405,725.80 : x
  2. Step 2: Convert to fraction form
    910,388.20/1,366,359.90 = 405,725.80/x
  3. Step 3: Cross multiply
    910,388.20x = 1,366,359.90 × 405,725.80
  4. Step 4: Simplify right side
    910,388.20x = 554,367,463,515.42
  5. Step 5: Solve for x
    x = 554,367,463,515.42/910,388.20
  6. Step 6: Final answer
    x = 608,935.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.